A Purdue University survey shows that the scientific community is split on the question
of whether human activities are at the root of climate change, with just over 50
percent of scientists saying that climate change is happening and that it is “caused
mostly by human activities.” - See more at: http://freebeacon.com/issues/scientists-split-on-human-impact-on-climate-change/#sthash.9IzBKc8I.dpuf